A 107-kbpi, 16-μm track width recording channel

Author

Carr, Thomas ; Wachenschwanz, David

Author_Institution

Eastman Kodak Co., San Diego, CA, USA

Volume

24

Issue

6

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

2961

Lastpage

2963

Abstract

A 107-kbpi (4210 bits/mm) data channel was constructed using an 840-Oe-coercivity super-VHS tape and an unshielded magnetoresistive (UMR) head having a track width of 16 μm and was used to explore the practical upper limits of areal storage density in magnetic recording. For a 16-μm track width record head in a system with no guard bands, such as a helical recording system, the areal density would be 170 Mb/in ². A (1.7) code and compact spectrum write (CSR) equalization were used, and phase margins of 36% were achieved at an error rate of 10 ^-6. The very high linear density achieved is possible because the UMR head and CSR write equalization procedure a nearly flat noise floor at the detector in a differential channel

Keywords

magnetic heads; magnetic tape storage; 16 micron; areal storage density; compact spectrum write; data channel; differential channel; flat noise floor; helical recording system; magnetic recording; phase margins; record head; super-VHS tape; track width; unshielded magnetoresistive head; Equalizers; Filters; Frequency; Magnetic heads; Magnetic noise; Magnetic separation; Noise figure; Signal to noise ratio; Transfer functions; Video recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92301

Filename

92301